Github user vanzin commented on a diff in the pull request:
https://github.com/apache/spark/pull/20546#discussion_r168143242
--- Diff: core/src/main/java/org/apache/spark/SparkExecutorInfo.java ---
@@ -30,4 +30,8 @@
int port();
long cacheSize();
int numRunningTasks();
+ long usedOnHeapStorageMemory();
--- End diff --
1. That follows the names in the public `MemoryMetrics` class from the REST
API.
2. We could add that, just as we could add a whole lot of other things. At
some point we should look at exposing the REST API types directly through
`SparkStatusTracker` instead of having these mirror types.
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